When to Plant in Wyoming

Wyoming offers some of the most challenging and rewarding gardening in the country. With high elevations, low humidity, and a very short growing season, success is a badge of honor for any Wyoming gardener.

Season extension is not just an option in Wyoming; it's a necessity. By using cold frames, hoop houses, and choosing the shortest-season varieties, you can produce a surprising amount of food in the 'Equality State'.

Common Mistakes

Planting without protection — frost can occur in almost any month of the year in parts of Wyoming.
Not accounting for the wind — Wyoming's legendary winds can be very hard on unprotected plants.
Ignoring the day-to-night temperature swing — high elevation means rapid cooling after sunset.
Underestimating the sun — intense UV rays at high altitude can scorch young, unprotected transplants.

FAQ

What is the last frost date?

Last frost varies widely, from late May in the lower basins to late June or July in the mountains.

When should I start tomatoes indoors in Wyoming?

April is usually the best time to start seeds indoors, as you'll want to wait for the soil to warm up in June.

Can I plant before the last frost?

Yes, very hardy crops like peas and radishes can handle the cool spring weather of Wyoming.

Why does timing vary so much within Wyoming?

Elevation is the primary driver of climate in Wyoming, creating massive variations over short distances.

What if I live in a frost-free area?

Wyoming has no frost-free areas; the entire state experiences long, cold winters.

How does Plan My Garden create my schedule?

We factor in your specific elevation and historical frost dates to provide a realistic and precise planting calendar.